This module implement UDF such as defined in Mathematical Mesh 3.0 Part II: Uniform Data Fingerprint draft-hallambaker-mesh-udf-11.

Give a piece of data DATA.

• The UDF is defined as: H(<Content-ID> + ':' + H(<Data>)) where H is the hash algerithm used to compute the digest of data presented. The Content-ID is the mime type of DATA (or any meta infor used qo qualify DATA).
• In the final representation, the UDF is prefixed by a byindicating the UDFTypeIdentifier as defined in mmesh-3.2

Created from templates made available by Stagehand under a BSD-style license.

Usage

A simple usage example:

import 'dart:convert';

import 'package:udf_dart/udf_dart.dart';

void main() {
  var digest = UDF.dataToUDFBinary(utf8.encode('+491722346123'), 'phone');
  var udf5PerBlock = UDF.printBase32(digest, precision: 125);
  print('UDF of +491722346123 is : ${udf5PerBlock}');
}

Features and bugs

Please file feature requests and bugs at the issue tracker.